Hello 3par guys,
excuse me for maybe just stupid questions. But I would be very grateful for a little clarification of some things.
I have two 8200 systems with async periodic sync configured. So far for now I have configured three remote copy groups, at this moment each group contains single VV. initial sync ran well and now we are syncing in 10min interval.
The thing I just messing my head with is remote copy snapshot size.
Not sure if I understand well to how snapshot mechanism with remote copy works. Yes I read the remote copy guide
On source side there is a resync snapshot maintained for each synced VV. This snapshot reflects the state before the last sync interval. When next sync interval starts, another snapshot is created on source side and new one snap is created on target side.
When sync is finished. Target snapshot is deleted and on the source side older of the two copies is deleted.
From what I understand, I thought the size of source snapshots is equal to change rate of replicated production VVs. But when I check for showvv -s.
Snap space uses much more then I expect, what is confusing to me, that even after succesfull sync the used space practically not changing.
For example - VV with 8192GiB size has 1592Gib rsvd snap space, and after sync its still the same.
And yes Iam 100% sure that I dont have 1,5TiB change rate at this VV.
There are no other snapshots on this VV.
Thanks in advance to anyone for shedding some light to my "problem".
Regards
Martin